Universal jimmyproof arc-bolt lock



Feb. 3, 1925.

C. W. LANPHERE UNIVERSAL JIMMYPROOF ARC BOLT LOCK 1925 2 Sheets-Sheet 1 Filed Oct. 30.

I /09 la7 INVENTOR CLIVE W, LANPHERE A ORNEY Feb. 3, 1925.

C. W. LANPHERE UNIVERSAL JIMMYPROOF ARC BOLT LOCK Filed Oct, 30, 1923 2 Sheets-Sheet 2 INVENTOR CLIVE W. LANPHERE ATT NEY Patented Feb. 3, 1925.

UNITED YSTATES cLIvE w. LANPHERE, or NEW Yomr, N. Y.

UNIVERSAL JIMMYPROOF ARC-BOLT LOCK.

Application filed October 30, 1923. Serial No. 671,820.

To all whom it may concern.'

.Be it known that I,I Cmvn WV. LANPHERE, a citizen of the United States, and a resident of 635 Test 169th Street, New York city, in the county of New York and State of New York, have invented a new and useful Improvement in Universal Jimmyproof Arc-Bolt Locks, of which the following is a, specication.

This invention relates to improvements in locks, and more particularly to an automatic lock having an arcuate bolt adapted to be projected into locking engagement with a keeper when a door is closed.

An object of my invention is to provide an automatic lock which is dependable in operation, simple in construction and of sufficient strength to resist damage by a 'jimmy or otherwise.

Another object of my invention is to provide a bolt which when projected, will serve to secure a door from movement in any direction away from a jamb.

Another object of my invention is to vid bolt type which may be locked lin its projected position at such time when the bolt is fully projected.

Another object of my invention is to rovide an automatic lock of the arcuate olt type with automatic means adapted to engage the bolt when the latter is fully projected and controlled by the movements of the bolt.

A further object of-my invention is to provide an automatic lock of the arcuate blt type in which the latter is automatically locked in its projected and retracted positions (only at such times when the bolt is fully projected or retracted). j V

further object of my invention is to rovide an automatic lock of the arcuate olt type having a bolt-tumbler which is actuated partly through the action of the pro- bolt A further objet of my invention is to provide an automatic lock of the arcuate bolt type which is arranged so as to provide a rigid connection with a guard or keeper.

A further object of my invention is to provide an automatic lock having a. face' plate. n

A further object of my invention 1s to provide an automatic lock of the arcuate bolt type which is capable of manual actuation to project or to retract the bolt and which may be actuated automatically at the will of the user.

A further object is to provide an automatic lock of the arcuate bolt type which 1s capable of operation regardless of the displacement of the coactin keeper under no1-mal conditions of shrin age, etc.

A further object of the invention is to provide an automatic lock of the arcuate bolt type having a co-axial lock barrel and pivotal support for the bolt.

Other objects of the invention will appear as the description proceeds.

Many efforts have been iliade to produce a satisfactory automatic lock employing an arcuate bolt which is capable of operation under ordinary conditions prevailing in the customary usage to which such a lock is subjected. So far as I am aware, no satisfactory simplicity of construction and certainty of operation has been produced.

In the present invention a lock possessing the desired characteristics has been obtained. This lock briefly stated comprises an arcuate bolt which is mounted on a radius arm pivotally supported within the casing housing the locking mechanism, Axially aligned with the pivotal axis of the radius arm is the key or lock barrel. lifeans are provided within the lock casing for engaging,r the bolt to hold the same in its fprojected position thus preventing the lock from being forced by a jimmy or otherwise. Owing to the pivotal mounting of the bolt and the projection of the bolt bcyond the supporting radius member, a rigid connection with the keeper is secured, thus rendering the lock more resistant to force applied in the manner above indicated.

x In addition to the foregoing desirable features, the lock embodies means for releasing t-he locking means for engagement with the bolt at such time when the bolt is fully projected, thus avoiding any interference of the bolt with the locking means. Another feature of the invention is the provision of means for holding the bolt in its retracted position, such means being automatically released when the door is closed and operating to hold the bolt retracted only when the bolt is fully retracted and the door opened. The lock also embodies a construction which enables the releasing means to be rendered ineffective and means are also provided to permit a manual retraction or projection of the bolt whenV such manual action is required.

Furthermore, the lock is provided with a latch whereby the door to which the lock may be fastened may be secured without employment of the lock. Y

The bolt employed in the lock forming the subject of my invention is of unique design, one of the purposes of such design being to prevent bending of the lock upon accidental projection thereof before the door is fully closed in the event that the bolt strikes against the jamb. The automatic feature of the lock combined with the various details outlined above, rovides a lock meeting the most rigid requirements, either of the type shown or a lock of any other .pharacten The invention will be more fully understood by reference to the drawings in which- Fig. 1 is a plan view of a lock embodying the present invention with the bolt projected, the cover plate having been removed and the face plate and keeper being shown in section,

Fig. 2 is a view taken on line II--Il in Fig. 1 and shows the face plate of the lock and the projected bolt in section,

j Fig. 3 is a transverse sectional view taken on line III-III in Fig. 1,

Fig. 4 is a plan view of the lock with the cover plate removed, the bolt being shown in a retracted position,

Fig. 5 is a vertical sectionV taken on line V--V in Fig. 4, the lock barrel being shown in full lines,

Fig. 6 is a transverse section taken on lines VI-VI in Fig. 4, f

Fig. 7 is a sectional view taken on lines VII-VII in Fig. 4, and

Fig. 8 is a fragmentary view of the lock showing a modiied form of mechanism for holding the bolt in a retracted position.

The present invention is shown as comprising a casing 15 for the lock-operatin mechanism. The casing may be provide with tapped holes 16 to receive screws 17 for the purpose of securin a plate 18 as a closure for the casing. ovable within the casin is an arcuate member `or bolt, designate as a whole by the numeral 19, adapted to be oscillated so as to move a tongue portion 21 thereof out from and into the casing. The bolt proper may comprise the said ton e 21, a tail-piece 22 and a stem 23, whc latter may be removably connected by a pin 21 to the ton e. These parts may be integral with a ra ius arm 24, which may be integral with a hub 25 rotatabl mounted on a bearin 27 provided in a w 128 of the casing 15. is osed centrally within the hub 25 is a stud s aft 26 having a collar 20 secured thereto, which prevents movement of the hub 25 from its bearing within the casing. The `collar 20 has a lever greater or lesser degree depen arm 29 secured thereto by means of screws, the function of said arm being described hereinafter. The stud shaft has a iiange 7 6 either integral therewith or sweated thereon which fits into a correspondin ly formed depression 76 in the casing wal 28. The function of the flan 7 6 isto revent inward movement of t e stud sha t. v

As illustrated in Fig. 5, the sides of the lock casing are so disposed with respect to the bolt so as to prevent lateral movement thereof, and therefore provide a raceway for the bolt. The bolt 1s so disposed with respect to the sides of the casin so as to provide a lateral clearance there etween `(see Figs. 3 and 5).

The novel form of my bolt simplifies the construction of the lock and the radial arm or web 24 is utilized to perform certain important functions to be hereinafter more fully described.

The bolt 19 manually or automatically matic projection is provided with a helical spring 31 disposed upon the stem 23, one end of the spring being engaged with a shoulder 32 of the bolt and the other end with a stop 33 which may be inte l with the casing 15. When the bolt is in its retracted position, the spring 31 is compressed and ten s to project t e bolt. It is obvious that the spring may be com and for autoressed yto a ing upon the amount of otential energy necessary to throw the bo t. In addition to the action of the spring however, the construction of the lock is scl'i, that the action of gravity aids to project the bolt. Although my lock is usually positioned in a door so that gravity may aid in effecting a movement of the bolt, it is to be understood that in cases where the lock is not so sitioned, the spring may be made of suicient strength to project the bolt without the aid of gravity.

Inasmuch as the bolt is normally urged to project from the casing, means are provide for preventing such movement until the bolt 1s dispose in the proper relation to a keeper or guide 34.

Means for retaining the bolt position and for effecting the timed release of the bolt, may comprise a latch 35 suitably ositioned on the bolt, a trigger or latchar 36 and a detent 37. The detent 37 may constitute one end of a releasermember 38.

The latch-bar 36 may be slidably disposed between one side 39 of the casing 15 and a guide 41 and ma have an exten portion 42 provided wit a rod 43 disposed in a slot 44 in a rigid rojection 45 integral with the side 39 of t e casing. A spring 46 positioned on the rod 43 and between a collar 47 and the rejection 45, servesto normally maintain t e latch-bar with a stopin a retracted may" be projected either i finger 48 thereof in the path of movement of the detent 37. The releaser-member 38 is provided with a spring 49 disposed between a beveled end portion 50 and a slotted guide 5L fastened to the casing. The detent 37 is therefore normally urged toward the stop-finger 48 or to position for anfrage- Inent with the latch 35 on the bolt. owever, by reason of the spring 46 on the latchbar 36, the stop-finger 48 is normally positioned to engage with an off-set portion 52 of the detent 37. The detent cannot, there fore, engage with the latch-bar until the stop-finger 48 is moved. A removal of the stop-linger is caused by an engagement between the shoulder 32 on the bolt and the projection 42 of the trigger @or latch-bar 36 when the bolt is retracted.

The coordination and arrangement of the several operating parts is such that at the time the bolt is in its final retracted position the trigger releases the detent 37 which moves under the action of the s ring 49 to engagement with the latch 35 an thus detains the tongue 21 of the bolt 19 within the casing.

When the detent 37 is moved to release the bolt 19, the potential energy of the spring 31 is released and the bolt travels through a circular path. the tongue thereof passing in one direction through upper apertures 54 and 54 in the side 53 of the casing and the guard 34, respectively, and in another direction through lower apertures 55 and 55 in the side 34, respectively. The end of the nose piece 56 of the bolt may enter the casing a predetermined distance. The side 53 may include a face plate 53 secured to the casing by Hat-headed countersunk screws 50. y The upper opening 54 in the side 53 of the casing may be slotted so as to permit the ready assembly of the bolt within the casing.

It will be understood that by reason of the passage of the bolt-tongue into and out from the apertures, in the guard and casing, that a portion 57 of the guard between the apertures may be so disposed as to prevent a movement of the lock-casing away from the guard and conse uently the jamb upon which the guard is fastened. It will thus be evident when a door is secured by the present lock, the bolt is not only secured from pivotal movement, but is also substantially proof against the action of a wedge or jimmy. The guard 34 may be provided with a reinforcing rib 34 which may be welded or otherwise secured to the plate 34.

It has been found of great advantage not only to normally secure the bolt 19 from movement when in its retracted position as hereinbefore described, but to lock the bolt in its projected position. For the latter purpose. the end or nose piece 56 of the ltongue 21 is provided with a notch 58 su 53 and in the guard disposed as to receive an end 59 of a bolttumbler 61 when the bolt is in its projected position.

In the present invention. the bolt-tumbler 61 is provided with having a helical spring 63 mounted thereon. The rod may be disposed in a guide 64 and the spring may engage with a seat 65 on the tumbler and with the guide to urge the bolt-tumbler to a position to intel'- loek with the bolt. The bolt-tumbler may be slidable between a wall 53 of the casing and guide luO 67. cans for lifting the bolt-tumbler .rom the notch 58 may comprise the lever arm 29 secured to the shaft 26. The lever 29 may be so positioned that when turned by rotation of the shaft, the lever will engage with an extended portion 68 of the bolt-tumbler 61 and lift the end 59 thereof from the notch 58 and a continued movement of the lever causes it to engage with a stud 69 suitably positioned on the radius arm 24. Thus a rotary move ment of the lever effects a movement of the bolt 19 until the same is held by reason of latch 35 and detent 37. In order to prevent unnecessary frictional engagement between the nose piece 56 of the bolt and the end 59 of the bolt-tumbler, the tumbler is provided with a prong 7l adapted to engage with an extended portion 72 of a tumblerdetent 73. The tumbler-detent may be mounted in a guide-bearing 74 which may be integral with the side 53 of the casing and may extend above the radius arm 24 ot.' the bolt 19. A springr 70 positioned between a rigid projection 70 on the guidebearing and tumbler-detent 73 acts to normally position the extended portion 72 of the tumbler-detent for engagement with the prong 71. When this engagement is effected. the bolt-tumbler is held with the end thereof out of the path of movement of the nose piece 56 of the tongue 21 of the bolt.

release of the tumblcr-detent 73 from engagement with the prong is caused by contact between an exposed end 73 of the tuinbler and a pin 74 secured to and projecting,r from the radius arm 24 which is so positioned, that the release of the bolt-tumbler is timed to enter the notch 58 as the same registers with the end 59 of the tumbler upon the projection of the bolt.

It is desirable to prevent engagement between the end 59 of the bolt-tumbler 6l and an end 23 on the rear or tail-piece 22 of the bolt in order to avoid interference and wear through continued use. Means comprising the tail-piece 22 may, therefore, be provided to engage with a cam arm 75 integral with and projecting from the end 59 of the bolttumbler 61. As the bolt 19 is retracted, the tail piece 22 makes contact with the cam arm 75 secured to the bolt-tumbler 61 and the latter is slightly raised thereby to permit the a rod 62 (see Fig. 4)

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free passage of the end 23 of the rear of the bolt 19into the aperture 55 in the side 53 of the casing.

The end 23' which is fastened to the rear of the tail piece 22 is also adapted to` engage the end of the stem in order to stiilen the support thereof and to prevent any warping through temperature changes, etc.

The end 23 is of sufficient proportions to completely occupy the aperture 55 and must, therefore, have an area substantially `equal to a transverse cross-sectional area of the ton ue. Although the bolt-tumbler is partial y moved by means of the lever 29, as described below, to bring the tumbler out of the path of movement of the end 23 of the stem, it must be lifted higher than the lever 29 moves it, and this may be accomplished by the employment of the cam arm and tail-piece 22.

For the purpose of lifting the bolt-tumbler 61 prior to a movement of the bolt, means are provided whereby the lever 29 may move a predetermined distance rior to engagement with the stud 69. This action is accomplished by a rotation of the lever 29 on the Astud-shaft 26 (see Fig. 5) journaled in the bearing 27. The shaft may be retained from endwise movement by the provision of a coll" lar 7 6 disposed in a counterbore in the and the collar or hub 20 of the lever secured to an inner end of the shaft.

As above described, the radius-arm 24 is mounted rotatably on the shaft 26 and positioned between the lever 29 and the bearing 27. The shaft may be provided with the usual angular socket 78 in which the shank 7 9 of a knob may be disposed and by mearais of which the lever 29 may be operated to retract the bolt. The lever 29 is normally held in engagement with a stop-pin 81 secured to the radius arm 24, through the action of a spring 82 compressibly disposed on a bowed carrier 83 having one end secured in the lever 29 and the other end disposed in a stop-member 85 secured to the radius arm 2l. By reason of this construction, the lever 29 is normally urged against the stop-pin 81 and may be moved a predetermined distance without eifectir'i a movement of the bolt 19.

As illustrate in Fig. 1, when the bolt is projected the lever is in position against the stop-pin 81 and in position to be rotated in the direction of the arrow X by a manipulation of the knob-shank 79 which action moves the lever 29 to bring the lever in contact with the bolt-tumbler 61 to lift it from the notch 58 and a further movement of the lever effects a rotation of the radius arm and consequently a retraction of the tongue 21 to position within the casing.

When desirable, the bolt may be secured in a retracted position. For this purpose, I may provide push-buttons 87 and 88 (see Fig. 1). The button 88 may be provided casing arm 29 narm or ward 104 may fore, is provided with a stoprod 89 shitable in a guide 91, and may have an end 92 so positioned as toY be movable into and out of the path of movement of a lug '93 securedto the radius arm 24. The stop rod 89 ma be moved inwardly to engage with the lug a thrust upon the button 88. An outwar movement of the stop-arm may be produced by an inward movement of the button 87 which is associated with the stop-rod 89 by a lever 94 movable about a pin 95 secured in the casing 15. The ends of the lever 94 may be positioned in notches 96 and 97 in the stop-rod 89 and the shank of the button 87, respectively. It will be appreciated that the present push button arrangement provides means for directly engaging one of the component parts of the bolt 19. The guide 91 is of suilicient width so as to furnish a support for the sides of the casing, and tlius operates as a separator to revent the sides from being sprung inward y the lock mechanism. y

As described, the lever 29 may be oscillated by a suitable knob or handle from one side of a door, however, a key barrel may be provided to project from the opposite side of the door as shown in Fig. 5. The key barrel may be of any shown having a cylindrical casing 99 exteriorally threaded and screwed into a tapped hole 101 in the lock casing and may be held in adjusted position by a set-screw, not shown. As illustrated, the key-barrel is ec centrically mounted with res ect to the pivotal axis ofl the arcuate bo t, however, in certain types of locks, for example a rim lock, the ke barrel may disposed wit respect to the pivotal axis of the arcuate bolt. The key-barrel may have the usual tumbler or key cylinder 102 rotatable upon the insertion of a ke 103. Au

be mounte at the inner end of tlie cylinder 102 and proportioned to engage with an upper end 105 of the stud 69 on the radius arm. Thus when the key is inserted and turned, the arm on ythe key-barrel will engage with and retract the bolt. The stud or post 69, as stated heretowith a shoulder or projection 105, which is in stepped formation to the lower portion of the ost. This arrangement ermits the key-cy inder to be screwed into t e casinglwithout jamming the operating parts of t e lock. The arm 104 on the key-cylinder engages the upper step or pro- 'ectio`n 105, whi'lxe fhe arm 29 on fth lockarrel e a t e ower rtion o t e st 69. Thgosmav be retigfcted or projeiitiid through either of these instrumentalites.

The lever or ward on the key cylinder is so arranged that when the key 103 is turned to rotate the key-barrel, the arni 29 of the knob may remain in its normal osition and itfwill thus be evident that t e key and and interfere with the operation of suitable type, the one be concentrically Imola-actuating means are independent of each other. The knob and its spindle lever 29 may be employed to project the bolt manually bv rotating the knob in a counterclockwise direction and thus bringing the lever 29 into contact with pin 81, the lever 29 passing under the tumbler arm 68 before the post T4 on the radius arm 24 moves tumbler detent 73 to release the tumbler for engaging the bolt notch 58. If desirable, the bolt may be manually projected by thc key-barrel by rotating the latter in a counter-clockwise direction to engage the ward 104 with the other side of the stud 69.

The present lock may be provided with any suitable form of latch operable independently of the lock mechanism. As shown, this latch may be in the form of a slide-rod 10T having the usual outwardly projecting beveled end 108 and provided with a helical spring 109 positioned between the end 108 and a slotted stop 111 secured to the casing. The inn'er end of the slide-rod may have an offset arm 112 provided with a lug 113 for cooperation with an arm 114 secured t0 a rotatable hub 115 j ournaled in the casing 15. The hub may have an angular socket 116 to receive an end of a knob (not shown) for a manual manipulation of the slide rod. Means for normally maintaining the hub 115 in its operative position ma)v comprise a spring 117 mounted on a bowed member 118 secured to a post 119 fastened to the underside of the arm 114. The casing may be provided with a slotted projection 121 in which the bowed-member is movable and the spring 117 may be positioned between the projection and the post 119. Upon rotation of the hub 115 to retract the latch, the springs 109 and 117 Will be placed under compression, and upon release of the knob with which the hub is associated, the spring 109 will return the latch to its projected p0- sition and the spring 117 will, independently of' the spring 109, return the hub and attached arm 114- to their initial position.

Although the releaser member and the latch are illustrated and described as independent of each other, it is obvious that these two membeis may be combined and the releascr bar serve the dual function of releasing the arcuate bolt to permit its projection and also to latch the door in the event the releaser is rendered inoperative.

When adaptin my invention to what is termed a rim-loc construction, I provide a modified form of means for releasing the bolt,'and for retaining the same in its retracted position. i

As illustratedI in Fig. 8, the radius arm 24 may be provided Withalug 123 positioned to engage with the lip 124 of a. stop-member '125. The stop-member may be provided with an integral extended portion 126having a projection 127 movable in an aperture 128 in a side 129 of a casing and a spring 131 may be provided to normally bring the lip 124 in the path of the lug 123 as the same is moved with the radius arm when the bolt is retracted. The spring 131 may comprise a helix mounted on a straight portion 132 of the stop member and may be disposed between a shoulder 133 thereof and a Slotted guide 134 which may be fastened to the casing. It will be readily seen that When the bolt is retracted it will be automatically secured and may be released by a thrust upon the projection 127 against the guard or any other desirable means. For rendering the releaser means 125, etc., ineffective, a catch 123 comprising a headed stud projecting through the side of the casing, may be employed. The Stud may be so positioned with respect to the radius arm that it may be pr jected behind the lug 123 and when thus positioned will render the releasing means ineffective. By merely withdrawing the stud the releasing means may be rendered effective to perform its normal functions. In a rim-lock construct-ion, such as illustrated in Fig. 8, the key-cylinder may be provided with a shank projecting forwardly from the key-plug, which shank may engage a slot in an arm mounted Within the casing, the latter, i. e., the arm, being adapted to engage the operating mechanism for the bolt, as illustrated in Fig. 5. Such construction is obvious to those skilled in the art. The modification illustrated in Fig. 8 is more fully illustrated, described, and claimed in my copending application Serial Number 744,327. tiled Cctober 18, 1924.

When my lock and lkeeper have been mounted in a door and jamb and assuming the bolt has been projected, it may, as above set forth, be retracted either b turning a knob or a key and automatica, ly detained from further actuation. This detention is effected an engagement between the shoulder 32 on the bolt and the trigger or latch-bar 36. The shoulder and trigger cooperate to effect the engagement of the latch when it has been properly positioned to receive theend of the detent 37 of the releaser or detainer member 38, at which time the nose of the tongue 21 will be positioned substantialy flush With the aperture 54 and the end 23 of the tail piece 22 will serve as a closure for the aperture 55 when the bolt is retracted. It will be noted that when my bolt is in a retracted position the face plate presents a comparatively smooth and pleasing appearance. WVhen the bolt 19 is in its retracted position, the bolt-tumbler 61 is held inoperative by reason of its engagement with the tumbler detent and the engagement between the cam arm and the tailiece. p The detent 37 having secured the bolt from movement, the door may be automatically locked when swung closedat which time the releaser 38 en s with the guard y 34 and actuates the etent 37 causing a movement thereof to release the latch 35. The potential energy of the spring 31 is free to act and the bolt enters the guard and encircles the portion 57 thei'of.

As the bolt travels toward the guard, the tail-piece remains in contact with the camarm until the end 21' has passed theend of the bolt-tumbler as the tail-piece clears the arm the bolt-tumbler is retained from movement because of the en'tgaglement betweeen the prong thereon an t e tumbler detent. As the radius arm 24 moves with` the bolt the pin 7 4 on saidwarm makes contact with the tumbler detent as the notch 58 registers with the end 59 of the bolt-tumbler and ai'ects the interlocking of the bolt and bolt-tumbler in the pro er timed relation.

One of the features o my invention which makes; the lock useful under varying conditions, is the construction of the releaser bar and the detent connected thereto. The relationship between the detent and releaser bar is such that a complete release o the bolt is effected regardless of whether or not the door and jamb be very close to each other. The extent of movement of the releaser bar after the det/ent has disengaged the bolt is such as toprovide in eect a ost motion movement the releaser barmoving a greater or less distance depending entirely upon the gap existing between the door and the jamb.

The term lock barrel as employed in the appended claims may be construed as covering any kind of a spindle ory other mechanism for operating the vlock mechanism, and in the present embodiment of applicants invention comprises the spindle 26 and cooperating elements.

Although a preferred embodiment of my invention has been shown and described herein, it is obvious that many modifications may be made therein without departing from the spirit and scope of the inventiony as set forth in the appended claims.

What is claimed is z- 1. A lock comprising a casin an arcuate bolt havin a tongue portion a apted to be projected rom said casing, .a radius yarm pivotall mounted within said casing and en aging said bolt and being transversely otet wlth respect thereto, and means for automatically projecting saidfbolt.

2. A lock comprising a casin an arcuate bolt having a tongue portiono substantially the same thickness as the casing formed by its two main walls adapted to be projected from said casing, a radius arm pivotally mounted within said casing and engigin said bolt behind said ton ue, said olt being transversely oiset wit respect to said radius arm, and bolt actuating means tially the same t dis osed within the path of movement of sai bolt.

3. A lock comprising a casing, bolt having a ton an arcuate e portion of substanickness as the casin formed by the two main walls and adapted to be projected from said casing, a radius arm pivotally mounted within said casing and en aging said bolt behind said tongue,

said bo t being transversely offset with respect to said radius arm,'and a keycylinder lock to actuate said bolt 4. A lock com rising a casing, an arcuate bolt adapted to e projected from said casing, a radius arm pivotally mounted within said casing and connected with said bolt,

means for rojecting said bolt, means for locking sai bolt in its projected position, and means associated with said radius arm for actuating the said locking means.

5. A lock comprising a casing, an arcuate bolt adapted to e projected from said casing, a radius arm pivotally mounted within said casing and associatedl with said bolt, means for operating said arm to roject said bolt, means for locking said olt in its pro'ected` position, and means mounted on sai 'arm for permitting said locking means to become operative to lock said bolt.

6. A lock comprising a casing, an arcuate bolt adapted to be rojected from said casing, means for projecting said bolt, means for locking said bolt in its projected osition, means for ret-racting said 10c 'ng means, and means for locking said locking means in its retracted position. i

7. A lock comprising a casing, an arcuate bolt adapted to be projected from said casing, an oscillatory arm mounted within said casing and associated with said bolt, means for projecting said bolt, means for locking said bolt in its prjectedposition, means for releasing said locking means, retainer means for holding said locking means in released position, and means on said radius arm for controlling the movements of said retainer means.

8. A lock comprisinr a casing, an arcuate bolt movable from said casing, a radius arm pivotally mounted within said casing and supporting said bolt, means for projecting said bolt, means for reti-acting said bolt, means for lockin said bolt in its projected position, means or locking said bolt in its retracted position, and means on said radius arm for controlling the movements of each of said locking means.

9. A lock comprising a casing, bolt adapted to e projected from saidcasing, a radius arm pivotally mounted on said casing and sup rting said bolt, means for projecting said olt, means for retracting Asaid bolt, means for locking said bolt in its projected position, means for locking said bolt in its retracted position, and means an arcuate ilo for holding said third-mentioned means inoperative until said bolt is fully projected.

10. A lock comprising a casing, an arcuate bolt adapted to be projected from said casing, a radius arm pivotally mounted Within said casing and associated with said bolt, means for projecting said bolt, means for retracting said bolt, means for locking said bolt in its projected position, means for locking said bolt in its retracted position(` means for holding said third-mentioned Ineans inoperative until said bolt is fully projected. said fifth-mentioned means cooperating with said radius arm to effect release of said third-mentioned means.

11. A lock comprising a casing, an arcuate bolt adapted to be projected from said casing. a radius arm pivotally mounted within said casing and carrying said bolt, means for projecting said bolt, means for retracting said bolt, means for locking said bolt in its projected position,'means for locking said bolt in its retracted position, means for releasing said third-mentioned means, means for releasing said fourth-mentioned means, said releasing means being controlled by movements of said radius arm.

12. A lock comprising a casing having spaced apart openings in one Wall thereof, an arcuate bolt with an arc stem and spring ad justed thereto. said bolt when in projected position being disposed in said openings, and having its front and rear ends similarly shaped so as to close said openings when in the retracted position.

13. A lock comprising a casing, an arcnate bolt pivotally mounted on said casing. means for projecting said bolt from said casing. means for reti-acting said bolt, said reti-acting means having a common axis with said bolt.

ll. A lock comprising;r a casino', a bolt pivotalljY mounted within said `casing, a spindle to actuate said bolt said spindle having a flange to hold the bolt in operative position.

15. In a lock,a casing. an arc-shaped bolt pivotally mounted n" hin said casing and haring an arc stem and spring adjusted to said stem to project said bolt from said casing.

16. lock comprising a casing. an arcshaped bolt having a flaring radius arm pivotally mounted within said casing, and means for retracting said bolt` means on said radius arm cooperating with said firstmentioned means to effect the retraction of said bolt.

17. A lock comprising a casing, an arcshaped bolt having a radius arm pivotally mounted Within said casing, and means to hold said bolt within saidcasing, said means being controlled by said radius arm.

1S. A lock comprising said bolt is 1n its means to automatically project said bolt,

a Casinv havind openings in its face, an arc-shaped bolt having its front and rear ends similarly shaped and adapted to close. said openings when retracted position and said bolt when fully projected eiigaging said openings.

19. A lock having a pivotally mounted arc-shaped bolt consisting of a bolt portion, a tail portion and a stem for a spring overlying said tail portion.

20. r lock having an arc-shaped bolt consisting of a bolt portion. a tail piece. a stem for a spring. and a pivotally supported radius arm for supporting said bolt.

:21. A lock comprising a casing, an arcnate bolt pivotally mounted on said casing. means engaging said bolt directly to retract the same. means for projecting said bolt, means operative When said bolt is fully projected to lock the same in its projected position, means for retracting said locking means, and means for holding said locking means retracted until said bolt is fully projected.

22. A lock comprising a casing, a radius arm pivotally mounted on said casing` said radius arm having a forwardly projecting,r bolt and two rearwardly projecting members one of which is adapted to a spring for projecting said bolt and the other of which is adapted to engage means for holding said bolt in its retracted position. j

23. A lock having an arc-bolt. means forl projecting said bolt, a bolt-tumbler adapted to engage. said bolt to hold the saine in projected position. a detent associated with said tumbler to hold the same in inoperative position, and means for operating said dctcnt to release said tumbler.

2l. A lock having a slidable pivotallv mounted arc-shaped bolt, a slidable bolt tumbler and a detent cooperating with said tumbler. i

25. A lock comprising a nate bolt pivotally mounted ing, means for projecting said bolt, means for retracting said bolt, and means for returning said retracting means to its initial position including an arcuate stem and a spring fitted thereto.

26. A lock comprising a casing. an arcuate bolt pivotallj7 mounted Within said casing, a guard, said guard having a pair of openingslin spaced relation for the entrance of said bolt, said openings being of such size as to permit said bolt to pass therethrough regardless of the usual changes of position of the member to which said casing is attached or with which said lock cooperates.

27- The combination of a. guard and a casing, an arcj lock comprising a casing, an arcuate bolt pivotally mounted within said casing,

accommodate within said cascomprlsing two end for projecting said bolt and means for retracting said bolt, means for holding said bolt in its retracted position, releaser means for Hsaid bolt, and means independent of said releaser means for rendering the latter ineffective.

28. A lock comprising a casing, an arcuate bolt adapted to be projected from said casing and when projected engaging said casing in a plurality of points, said bolt portions adapted to serve as closures for the openings in said casing throu h which the bolt passes when projected, sald end portions being connected by an intermediate section oiset with respect to said end portions.

29. In alock, a casing, an arc-bolt, means for pivotally supporting said bolt, means to project said bolt, means to retract said bolt, means directly engaging said bolt to hold the same retracted and which is adapted to release said bolt, and means to render-inefective said releasing means.

30. A lock comprising a casing, a radius arm pivotally mounted within said casing, an arcuate bolt projecting forwardly from said arm, means for projecting said bolt, means for engaging said bolt when fully projected to hol the same in such position, said means being rendered operative by movement of said radius arm when said bolt is being projected.

31. A lock having an detachable stem secured thereto, said stem being supported at both ends by said bolt.

32. A lock having an arcuate bolt, means for projecting said boltboth manually and automatically, said manual means bein dispolsed within the path of movement o said 33: A lock having an arcuate bolt, a radius arm pivotally supporting said bolt, means arcuate bolt and a `for automatically projecting said bolt, and

means for retracting said bolt, said last mentioned means engaging said arm to project said bolt by manual manipulation.

34. A lock comprising a casing, an arcuate bolt, a radius arm pivotally journaled on said casing and supporting said bolt, and means axially aligned with the pivotal point of said arm and cooperating directly with the intermediate portion of said arm to retract said bolt when moved in one direction and to project said bolt when moved in the opposite direction. f

35. A lock comprising a casing, a radius arm pivotally mounted on said casing, a spnd e centrally disposed with respect to the pivotal point of said radius arm, an arcuate bolt supported b said radius arm, and means on said spind e cooperating with said arm for retractmg said bolt. .l

\ 36. A lock comprising a casing, an arcuate bolt adapted to bte/projected from said casing, means for projecting said bolt, means ,said stem for projecting said bolt,

for rendering said projecting means ineiective, and a. latch for eng ng a guard when said bolt is rendered ine ective.

37. A lock comprising a casing, an arcuate bolt adapted to be projected from said: automatically projecting casin means for said 1t, means or locking said bolt in its projected position, means for releasing sai-d locking means, means for retractin said bolt, and means for preventing inter erence between said locking means and said bolt while the latter is being retracted.

3,8. A lock comprising a casing, an arcuy ate bolt mounted on said casing, means for projecting said bolt, means for retracting said bolt, means for locking said bolt in its projected position, and means for first releasing said locking means imparting further movement to the locking means until said bolt is fully withdrawn.

39. In a lock, a casing, a pivoted bolt mounted on said casing, a spindle in said casing and disposed amally with respect to the pivotal point of said bolt, and an arm connecting said spindle and said bolt., said bolt being movable by means o said arm. 40. A ockcomprising a casing, an arcuate bolt pivotally mounted within said casin and an arcuate spring to project said bo t.

41. A lockcomprising a casing, a. bearing in the wall of said casing, a pivotal arc-bolt mounted on and supported by said bearing, means to project said bolt, means to hold said bolt projected, and a spindle having an arm directly connecting the same with said bolt to release said holding means and to `move said bolt.

42. A lock comprising a casing, an arcuate bolt ivotally mounted within said casing, said olt having a stem, a spring mounted on said stem for projecting said bolt, and means for holding said bolt in its projected position.

43. A lock comprising a casing, an arcuate bolt pivotally mounted within said casing, said bolt having a stem, a spring mounted on k means for holding said bolt in its projected position, and Vmeans for controlling said holding means.

44. A lock comprising a casing, an arcuate bolt having front and rear ends, said casing having openings therein through which a portion of said bolt is adapted to pass, said ends serving as closures for said openings, and automatic means for projecting said bolt.

45. A lock comprising a casin an arcuate bolt pivotally, journaled on said casing, a lock barrel positioned within the path of movement of said bolt and associated therewith to actuate the same.

46. A lock comprising a casing, a spindle mounted for rotary movement within said and then for casing, an arcuate stem secured to said spindle, and a spring mounted on said stem for actuating said spindle in one direction.

47. A lock comprising a casing, a lock barrel supported by said casin an arcuate stem associated with said lock `barrel, and a spring mounted on said stem for rotating said lock barrel.

48. A lock comprising a casing, an arcuate bolt having a pivotal bearing in said casing, a lock barrel mounted within said pivotal bearing, said lock barrel having an arcuate stem and a spring on said stem.

49. A lock comprising a casing, an arcuate bolt supported for movement; in said casing, a lock barrel rotatably supported by Said casing, a post projecting from said bolt and an arm projecting from said lock barrel adapted to'coact with said post to retract and to project said bolt.

50. A lock comprising a casing, an arcuate bolt pivotally mounted within said casing, said bolt having an arcuate spring associated therewith for projecting the same, and a key cylinder supported by said casing and coacting with said bolt for retracting the same.

51. A lock comprising a casing, an arcuate bolt pivotally mounted Within said caSin said bolt having a stem and a springajusted thereto, and a key cylinder associated with said bolt for retracting the same.

52. A lock comprising a casing, an arcuate bolt pivotally mounted within said casing, an arcuate coiled spring for projecting said bolt, and means to retract said bolt.

53. A lock comprising a casing, an arcuate bolt pivotally mounted within said casing, said bolt having a stem, a spring mounted on said stem and adapted to project said bolt, and means to retract said bolt.

54. A lock comprising a casing, an arcuate bolt pivotally mounted within said casing, said bolt having a stem, a spring mounted on said stem and adapted to automatically project said bolt, and means to hold the bolt inoperative.

55. A lock comprising a casing, an arcuate bolt pivotally mounted Within said casing, said bolt having a projecting tongue and a stem, a spring mounted on said stem, and means to hold said bolt retracted.

56. A lock comprising a casing, an arcuate bolt pivotally supported by said casing, a lock barrel concentrically mounted with respect to said arcuate bolt and coacting therewith to retract said bolt, and a cylinder lock eccentrically mounted with respect to said arcuate bolt and having a key barrel concentrically mounted With respect to said bolt and coacting therewith to retract the same.

5T. A lock comprisin a casing, an arcuate bolt pivotally mounte Within said casing, means for projecting said bolt, a latch, means for retracting said latch, means for projecting Said latch, and means for returning said retracting means to initial position.

58. A lock comprising a casing, an arcuate bolt pivotally mounted within said casing, said casing having a pair of openings in one face thereof through which said bolt is adapted to be projected, one of said openings being in the form of a slot whereby said bolt may be readily assembled Within said casing.

59. Alock having u latch, means for retracting Said latch, an arcuate stem secured to said means, and a spring mounted on said stem.

60. A lock comprising a casing, an arcuate bolt pivotally supported by Said casing, means for projecting said bolt, means for retracting said bolt, means for holding said bolt retracted, and releaser means for releasing said bolt, and a latch.

61. A lock comprising a casing, an arcuate bolt pivotally mounted Within said casing, means for projecting said bolt, means for retracting said bolt, means for holding said bolt retracted, and means for releasin said last-mentioned means, means for ren ering said releasing means, ineffective, and a latch.

62. A lock comprising a` casing, a pivotally mounted bolt movable in a curved path, a stem associated with said bolt, a resilient member compressible by a movement of said bolt in one direction and means for automatically releasing said member to move the bolt in another direction.

63. In a lock, the combination of a casing, a pivotally mounted arcuate bolt, a helical spring, a stem associated With said bolt and movable Within said spring, means for holding said spring compressed, and means for automatically releasing said spring to o10:5

move said bolt.

G4. In a lock, the combination of a plvotally mounted bolt comprising a tongue and a stem, a helical spring mounted upon said stem, means for moving said stem Within said spring to accumulate energy, and means for automaticall releasing said energy to actuate said bo t.

G5. In a lock, the combination of a bolt comprising a tongue and a stem, a-hel1cal springl mounted upon said stem, said bolt having aftail piece and an end pie/ce, the latter being secured to the tail piece and engaging said stem to support the same in part.

66. A lock comprising a casing, a bolt pivotally mounted, means for projecting said bolt, means for locking said bolt in its projet-ted position, and means controlling the movement of said last-mentioned means at such time when the bolt is fully projected.

G7. A lock comprising an arc-bolt mounted Within the lock easing, and a keycylinder screwed in said casing and cooperating With said bolt.

68. A lock comprising a casing, an arcbolt adapted to be projected from said casing, means for projecting said bolt, means for locking said bolt in its projected position, means for retracting said locking means, and means for locking said locking means in its retracted position.

69. A lock comprising a casing, a radius arm pivotally mounted' within said casing, a curved bolt projecting forwardly therefrom, said bolt being offset transversely with respect to said radius arm, and means for actuating said bolt, said means being disposed within the path of movement of said bolt and engaging said radius arm.

70. An arc bolt lock comprising a pivotallj7 mounted arc-bolt, means to project said bolt, means to retract said holt, common means to hold said bolt retracted and to release the same for projection, and means to render said common means inetfective.

71. A lock comprising a lock casing, a radius arm pivotally mounted Within said casing, an arcuate bolt supported by said arm, a lock-barrel, a key cylinder, a stepped post mounted on said radius arm, one step of said post cooperating with said lock barrel and the other step of said post cooperating with said key cylinder.

72. A lock comprising a casing, a pivotal bolt adapted to be projected from said casing, said bolt when projected engaging the casing at a plurality of points, and resilient means directly cooperating with said bolt for projecting the same.

73. A lock comprising a casing, an arcuate bolt adapted to be projected through one face of said casing, a pair of spaced apart openings in said face through which said 'bolt is adapted to be projected, one of said Openings being in-the form of a slot, and a cover face plate for said casing having openings in alignment with the openings in the face of said casing.

74. A lock comprising a casing, a radius arm rotatably mounted on said casing, a

spindle centrally disposed within said radius arm, an arcuate bolt supported by said radius arm, and means on said spindle coprating with said arm for retracting said 75. A lock comprising a casing, a bolt mounted for movement within said casing, a raceway recess in said casing for said bolt. said bolt being movable in said raceWay recess with sufficient clearance to permit easy movement thereof.

7 6. A lock comprising a guard, a casing having a bolt member adapted to move out of said casing in a curved path to engage the guard, and a latch disposed outside of the path described by the movement of said bolt member and adapted to engage said guard, and means to operate said bolt member and said latch.

77. A lot-k comprising a casing having a plurality of bolt openings, an arc bolt Within said casing, said bolt having a forwardly projecting tongue. a radius arm transversel \v offset with respect to and connected to said bolt, said radius arm being pivotally mounted within said casing, said bolt when projected engaging said casing at said openings and when in retracted position closing said openings, and means within the path of'movement ot' said bolt to operate thc same.

7S. A lock comprising a casing, an arcuate bolt adapted to have a portion thereof projected from said casing, a guard having spaced openings for the passage of said bolt, a latch disposed outside of the path of movement of said bolt, said latch engaging another opening in said guard, the clearance between said latch and guard opening therefor being of a different order of magnitude than the clearances between the bolt and guard openings therefor.

In testimony whereof, I have hereunto subscribed my name this 22nd day of October, 1923.

CLIVE W. LANPHERE.

68. A lock comprising a casing, an arcbolt adapted to be projected from said casing, means for projecting said bolt, means for locking said bolt in its projected position, means for retracting said locking means, and means for locking said locking means in its retracted position.

69. A lock comprising a casing, a radius arm pivotall mounted Within said casing, a curved bo t projecting forwardly therefrom, said bolt being offset transversely with respect to said radius arm, and means for actuating said bolt, said means being disposed Within the path of movement of said bolt and engaging said radius arm.

70. An arc bolt lock comprising a pivotally mounted arc-bolt, means to project said bolt, means to retract said bolt, common means to hold said bolt retracted and to release the same for projection, and means to render said common means inetfective.

71. A lock comprising a lock casing, a radius arm pivotally mounted Within said casing, an arcuate bolt supported by said arm, a lock-barrel, a key cylinder, a stepped post mounted on said radius arm, one step of said post cooperating with said lock barrel and the other step of said post cooperating With said key cylinder.

72. A lock comprising a casing, a pivotal bolt adapted to be projected from said casing, said bolt when projected engaging the casing at a plurality of points, and resilient means directly cooperating with said bolt for projecting the same.

73. A lock comprising acasing, an arcuate bolt adapted to be projected through one face of said casing, a pair of spaced apart openings in said face through Which said bolt is adapted to be projected, one of said openings being inthe form of a slot, and a cover face plate for said casing having openings in alignment With the openings in the face of said casing.

74. A lock comprising a casing, a radius arm rotatably mounted on said casing, a

spindle centrally disposed within said radius arm, an arcuate bolt supported by said radius arm, and means on said spindle cooperating With said arm for retracting said bolt.

75. A lock comprising a casing, a bolt mounted for movement within said casing, a raceway recess in said casing for said bolt, said bolt being movable in said racevvay recess nith suiicient clearance to permit easy movement thereof.

76. A lock comprising a guard, a casing having a bolt member adapted to move out oi' said casing iii a curved path to engage the guard, and a latch disposed outside of the path described by the movement of said bolt member and adapted to engage said guard, and means to operate said bolt member and said latch.

77. A lock comprising a casing having a plurality of bolt openings, an arc bolt Within said casing, said bolt having a forwardly projecting tongue, a radius arm transversely offset with respect to and connected to said bolt, said radius arm being pivotally mounted Within said casing, said bolt when projected engaging said casing at said openings and when in retracted position closing said openings, and means within the path ofniovement of said bolt to operate thc same.

7S. A lock comprising a casing, an arcuate bolt adapted to have a portion thereof projected from said casing, a guard having spaced openings for the passage of said bolt, a latch disposed outside of the path of movement ot' said bolt, said latch engaging another opening in said guard, the clearance between said latch and guard opening therefor being et' a dilierent order of magnitude than the clearances between the bolt and guard openings therefor.

In testimony whereof, I have hereunto subscribed my name this 22nd day of October, 1923.

CLIVE W. LANPHERE.

DISCLAiMER. j 1,525,303.-0l1'/ve W. Lanphere, New York, N. Y. UNIv'mnsAL JiMMmooF Anc BOLT LOOK. by the patentes.'

Patent dated February 3, 1925. Disclaimer filed October 18, 1927,

Hereby enters this disclaimer to those claims in said specification. which are in the following Words, to wit:

9. A lock comprising a casing, an arcuate bolt adapted to be projected from said casing, a radius arm pivotally mounted on Said casing and supporting said bolt,

means 'for projecting said bolt, means said bolt in its projected position, means for retracting said bolt, means for locking for locking said bolt in` its retracted position, and means for holding said third-mentioned means inoperative until said bolt is fully projected.

66. lock comprising a casing,

a bolt pivotally mounted, meansv for projecting said bolt, means for locking `said bolt .in its projected position, and means controlling the movement of said last-mentioned means at suc a pivotal bolt adapted 'oo be projected from engaging the casing at a plurality of points,

projected.

772. A lock comprising a ca sing, said casing, said bolt when projected time when the bolt is fully and resilient means directl cooperating with said bolt projecting the same.

[jfm'al Gazette Novem er 8, 1927.]

D l s LA: M E R 1,525,303.(}l/ve W. Lanphere New York,l N. Y. UNIVERSAL JIMMmooF Ano Bom' Loox. Patent dated February 3, 1925. Disclaimer filed Cctober 18, 1927,

by the patehtee. L i,

Hereby enters this disclaimer to those-claims in said specification which are in the following Words, to wit:

U 9. Alock comprising a casing, an arcuate bolt adapted to be projected from said oasmg, a radius arm pivotally mounted on Said casing and supporting said bolt, means 'for projecting said bolt, means for retraeting said bolt, means for locking said bolt in its projected position, means for looking said bolt in`its retracted position, and means for holding said third-mentioned means inoperative until said bolt is fully rejected. Y

66. lock comprising a casing n bolt pivotally mounted, means. for projecting said bolt, means for locking said bolt in its projected siton, and means controlling the movement of said 1asl .-mentione d means at suc time when the is fully Projected. i i i *972. A lock comprising a easing, 'a pivotal bolt adapted tobe projected from said casing, said bolt when projected engaging the easing at a plnrality of points, and resilient means directl `cooperating with said bolt lfor pro]eet1ngfthe same.

[Official Gazette Nov l er 8,1927] 

